/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMeshOverlay.h
Determines whether the base-mesh vertex has "bowtie" topology in the Overlay. Bowtie topology means that one or more elements at the vertex are shared across disconnected UV-components.
true if the base-mesh vertex has "bowtie" topology in the overlay
bool IsBowtieInOverlay ( int32 VertexID ) const